WO2017049725A1

WO2017049725A1 - Access control method for remote terminal in d2d communications, and related apparatus

Info

Publication number: WO2017049725A1
Application number: PCT/CN2015/093501
Authority: WO
Inventors: 雷艺学; 吴宽; 江明; 郑倩; 张晨璐; 张云飞
Original assignee: 宇龙计算机通信科技(深圳)有限公司
Priority date: 2015-09-25
Filing date: 2015-10-31
Publication date: 2017-03-30
Also published as: CN105228218A; CN105228218B

Abstract

The present invention provides an access control method for a remote terminal in D2D communications, and a related apparatus. The access control method for a remote terminal in D2D communications comprises: when receiving a connection request sent by a remote terminal, a relay terminal detects state and capability information of the relay terminal; determine, according to the state and capability information, whether the relay terminal can perform resource scheduling and access control on the remote terminal, so as to obtain a capability identifier of the relay terminal; and report the capability identifier to a base station, so that the base station determines, according to the capability identifier and use condition of communication resources of the base station, a device for performing resource scheduling and access control on the remote terminal. The technical solution of the present invention effectively resolves the access control problem and the resource scheduling problem when a connection is established between a remote terminal and a relay terminal, and it is ensured that the remote terminal and the relay terminal can perform D2D communication.

Description

Admission control method and related device for remote terminal in D2D communication

Technical field

The present invention relates to the field of communications technologies, and in particular, to an admission control method for a remote terminal in D2D communication, and an admission control device for a remote terminal in D2D communication.

Background technique

Device to Device (D2D) refers to direct communication between user equipments (UEs) without the need to transmit or forward through devices such as base stations (eNBs). D2D communication can be deployed. Within the coverage of the cellular network and/or outside the coverage of the network.

UE-to-NW (UE-to-Network) trunking is a new feature introduced in D2D communication. It has the advantage of flexible deployment and can expand network coverage without increasing existing network equipment. There are important applications in the field of public safety communications (such as earthquakes, wars).

At present, the 3GPP defines a link between the UEs in the D2D communication as a secondary link. As shown in FIG. 1 , when the remote UE is outside the network coverage of the base station, the 3GPP cannot establish a good connection with the base station. However, it is able to establish good D2D communication with the relay UEs in the vicinity of the network coverage. Therefore, the remote UE can be connected to the base station or other network nodes through the relay UE. At the same time, 3GPP defines the following two resource allocation methods:

Manner 1: In the RRC connection state, the UE requests the transmission resource from the eNB, and the eNB schedules the resource for the UE according to the report information of the UE, and the resource pool is not needed in this manner;

Manner 2: The UE autonomously selects the transmission resource from the resource pool. In this case, the pre-configured resource pool or the resource pool configured by the eNB is required.

When the UE is in the network coverage, the resource allocation may be performed by using any one of the foregoing two manners according to the eNB configuration; and when the mode 2 is adopted, the resource pool information is sent by the eNB by using the RRC (Radio Resource Control, radio resource). Control protocol) signaling Set and notify the UEs in the coverage by broadcasting the resource pool information.

After the relay-capable UE is initialized to be the relay UE and selected by the remote UE, the UE needs to establish a connection with the remote UE. However, due to the capability of the remote UE and the limitation of the radio resources, the access control problem of the relay UE and the remote UE in the connection establishment needs to be solved, and the related solution is not proposed in the related art.

Therefore, a new technical solution is needed, which can effectively solve the admission control problem when the remote UE establishes a connection with the relay UE.

Summary of the invention

The invention is based on at least one of the above technical problems, and proposes a new access control scheme for a remote terminal in D2D communication, which effectively solves the admission control problem and resources when the remote terminal establishes a connection with the relay terminal. The scheduling problem ensures that the remote terminal and the relay terminal can perform D2D communication.

In view of the above, the present invention provides a method for controlling the access of a remote terminal in D2D communication, which is applicable to a relay terminal that is within the coverage of the base station, and includes: when receiving a connection request sent by the remote terminal, the detection center Determining the status and capability information of the relay terminal; determining, according to the status and the capability information, whether the relay terminal can perform resource scheduling and admission control on the remote terminal to obtain the capability identifier of the relay terminal And reporting the capability identifier to the base station, where the base station determines, according to the capability identifier and the usage of the communication resource of the base station, a device that performs resource scheduling and admission control on the remote terminal.

In the technical solution, the relay terminal detects its own status and capability information when receiving the connection request sent by the remote terminal, determines its own capability identifier according to the status and capability information, and reports its own capability identifier to the base station. The base station can determine, according to the capability identifier of the relay terminal and the usage of the communication resource of the base station, the device that performs resource scheduling and admission control on the remote terminal, thereby implementing resource scheduling and admission control for the remote terminal, which is effective. The problem of admission control and resource scheduling when the remote terminal establishes a connection with the relay terminal is solved, and the remote terminal and the relay terminal can perform D2D communication.

According to the embodiment of the second aspect of the present invention, a method for controlling access of a remote terminal in D2D communication is also provided, which is applicable to a base station, and includes: receiving a capability identifier sent by the relay terminal, where The capability identifier is used to indicate whether the relay terminal is capable of performing resource scheduling and admission control on the remote terminal, and determining to perform resources on the remote terminal according to the capability identifier and the usage of the communication resource of the base station. Scheduling and admission control devices.

In the technical solution, the base station determines the capability identifier sent by the relay terminal, and determines the device for performing resource scheduling and admission control on the remote terminal according to the capability identifier of the relay terminal and the usage of the communication resource of the base station, and implements The resource scheduling and admission control of the remote terminal effectively solves the problem of admission control and resource scheduling when the remote terminal establishes a connection with the relay terminal, and ensures that the remote terminal and the relay terminal can perform D2D communication.

According to the third aspect of the present invention, there is also provided an access control apparatus for a remote terminal in D2D communication, which is applicable to a relay terminal that is within the coverage of the base station, and includes: a first detecting unit, configured to receive the far And detecting, by the terminal terminal, the status and capability information of the relay terminal, where the determining unit is configured to determine, according to the status and capability information, whether the relay terminal can perform resource scheduling on the remote terminal And the admission control to obtain the capability identifier of the relay terminal; the first sending unit is configured to report the capability identifier to the base station, where the base station communicates with the base station according to the capability identifier The usage of the resource determines a device that performs resource scheduling and admission control on the remote terminal.

According to the fourth aspect of the present invention, there is also provided an admission control apparatus for a remote terminal in D2D communication, which is applicable to a base station, and includes: a receiving unit, configured to receive a capability identifier sent by the relay terminal, where the capability identifier is used Determining whether the relay terminal can perform resource scheduling and admission control on the remote terminal; the processing unit, configured to determine, according to the capability identifier and the usage of the communication resource of the base station, to perform the remote terminal Equipment for resource scheduling and admission control.

In the technical solution, the base station receives the capability identifier sent by the relay terminal, and according to the middle The device that performs resource scheduling and admission control on the remote terminal is determined by the capability identification of the terminal and the usage of the communication resource of the base station, and the resource scheduling and admission control of the remote terminal is implemented, thereby effectively solving the remote terminal and the middle terminal. The admission control problem and the resource scheduling problem when the terminal establishes a connection ensure that the remote terminal and the relay terminal can perform D2D communication.

In the embodiment of the present invention, when the relay terminal performs the admission control on the remote terminal and the resource scheduling on the remote terminal, the base station needs to send the condition for reclaiming the admission control function to the relay terminal, so that the relay terminal according to the base station The use of communication resources and the conditions for reclaiming the admission control function determine whether the admission control function is returned to the base station. Through the above technical solution, the admission control problem and the resource scheduling problem when the remote terminal establishes a connection with the relay terminal are effectively solved, and the remote terminal and the relay terminal can perform D2D communication.

DRAWINGS

FIG. 1 is a schematic structural diagram of a system of a UE-TO-NW relay in D2D communication;

2 is a schematic flow chart showing a method for controlling admission of a remote terminal in D2D communication according to the first embodiment of the present invention;

3 is a schematic block diagram showing an admission control apparatus of a remote terminal in D2D communication according to a first embodiment of the present invention;

Figure 4 shows a schematic block diagram of a terminal in accordance with an embodiment of the present invention;

FIG. 5 is a schematic flow chart showing a method for admission control of a remote terminal in D2D communication according to a second embodiment of the present invention; FIG.

6 is a schematic block diagram showing an admission control apparatus of a remote terminal in D2D communication according to a second embodiment of the present invention;

Figure 7 shows a schematic block diagram of a base station in accordance with an embodiment of the present invention;

FIG. 8 is a schematic flow chart showing a relay connection admission control method in D2D communication according to the first embodiment of the present invention; FIG.

FIG. 9 is a schematic flow chart showing a relay connection admission control method in D2D communication according to a second embodiment of the present invention; FIG.

Fig. 10 is a schematic flow chart showing a relay connection admission control method in D2D communication according to a third embodiment of the present invention.

detailed description

The present invention will be further described in detail below with reference to the drawings and specific embodiments. It should be noted that the embodiments in the present application and the features in the embodiments may be combined with each other without conflict.

In the following description, numerous specific details are set forth in order to provide a full understanding of the invention, but the invention may be practiced otherwise than as described herein. Limitations of the embodiments.

2 is a schematic flow chart showing a method of admission control of a remote terminal in D2D communication according to a first embodiment of the present invention.

As shown in FIG. 2, the method for controlling the access of the remote terminal in the D2D communication according to the first embodiment of the present invention is applicable to the relay terminal in the coverage of the base station, including:

Step 202: When receiving a connection request sent by the remote terminal, detecting status and capability information of the relay terminal.

Step 204: Determine, according to the status and capability information, whether the relay terminal can perform resource scheduling and admission control on the remote terminal, to obtain a capability identifier of the relay terminal.

Step 206: The capability identifier is reported to the base station, where the base station determines to perform resource scheduling and admission control on the remote terminal according to the capability identifier and the usage of the communication resource of the base station. device.

In the above technical solution, preferably, the method further includes: when receiving, by the base station, notification signaling by the relay terminal to perform resource scheduling and/or admission control on the remote terminal, The remote terminal performs resource scheduling and/or admission control.

In any one of the foregoing technical solutions, preferably, if receiving, by the base station, the remote terminal performs admission control on the remote terminal, but the base station performs resource scheduling on the remote terminal The notification instruction, the admission control method further includes:

Receiving an admission control criterion sent by the base station; determining, according to the admission control criterion, whether to allow access by the remote terminal, and if so, establishing direct communication with the remote terminal.

In the technical solution, when the relay terminal performs the admission control on the remote terminal, and the base station performs resource scheduling on the remote terminal, the relay terminal receives the admission control standard sent by the base station, so that the relay terminal can be based on the standard. The control standard is used to determine whether the remote terminal is allowed to access, and the access control to the remote terminal is effectively implemented.

In any one of the foregoing technical solutions, preferably, if the notification command sent by the base station to perform resource scheduling and admission control on the remote terminal by the relay terminal is received, the admission control method further The method includes: receiving a condition for reclaiming the admission control function sent by the base station; detecting usage of the communication resource of the base station in real time, determining whether it is needed according to the usage condition of the communication resource and the condition for reclaiming the admission control function Stopping the access control of the remote terminal; when determining that the remote terminal needs to stop the admission control, sending a notification message to the base station, so that the base station implements the Into control.

In the technical solution, when the relay terminal performs the admission control on the remote terminal and the resource scheduling on the remote terminal, the base station needs to send the condition for reclaiming the admission control function to the relay terminal, so that the relay terminal according to the base station The use of communication resources and the conditions for reclaiming the admission control function determine whether the admission control function is returned to the base station.

In any one of the foregoing technical solutions, preferably, the status and capability information includes: remaining power information of the relay terminal, power consumption, a maximum number of remote terminals that can be currently served, and an estimated maximum service time, and whether The ability to schedule resources.

Fig. 3 is a schematic block diagram showing an admission control apparatus of a remote terminal in D2D communication according to the first embodiment of the present invention.

As shown in FIG. 3, the access control device 300 of the remote terminal in the D2D communication according to the first embodiment of the present invention is applicable to the relay terminal in the coverage of the base station, including: the first detecting unit 302, and determining Unit 304 and first transmitting unit 306.

The first detecting unit 302 is configured to detect the status and capability information of the relay terminal when receiving the connection request sent by the remote terminal, and the determining unit 304 is configured to determine, according to the status and capability information, Whether the relay terminal can perform resource scheduling and admission control on the remote terminal to obtain the capability identifier of the relay terminal; the first sending unit 306 is configured to report the capability identifier to the base station, And determining, by the base station, a device for performing resource scheduling and admission control on the remote terminal according to the capability identifier and the usage of the communication resource of the base station.

In the foregoing technical solution, the method further includes: a processing unit 308, configured to receive, by the base station, a notification message that the relay terminal performs resource scheduling and/or admission control on the remote terminal The resource scheduling and/or admission control is performed on the remote terminal.

In any one of the foregoing technical solutions, preferably, if receiving, by the base station, the remote terminal performs admission control on the remote terminal, but the base station performs resource scheduling on the remote terminal The admission control device 300 further includes: a first receiving unit 310, configured to receive an admission control criterion sent by the base station; the processing unit 308 is specifically configured to: according to the admission control standard Determining whether access by the remote terminal is allowed, and if so, establishing direct communication with the remote terminal.

In any one of the foregoing technical solutions, preferably, if the notification command sent by the base station to perform resource scheduling and admission control on the remote terminal by the relay terminal is received, the admission is performed. The control device 300 further includes: a second receiving unit 312, configured to receive a condition for reclaiming the admission control function sent by the base station; and a second detecting unit 314, configured to detect, in real time, usage of the communication resource of the base station; 316, configured to determine, according to the usage of the communication resource and the condition for reclaiming the admission control function, whether to stop the admission control of the remote terminal, and the second sending unit 318, configured to determine The unit 316 determines that it is necessary to stop the admission control of the remote terminal, and sends a notification message to the base station to enable the base station to implement admission control to the remote terminal.

Figure 4 shows a schematic block diagram of a terminal in accordance with an embodiment of the present invention.

As shown in FIG. 4, a terminal 400 according to an embodiment of the present invention includes an admission control device 400 of a remote terminal in D2D communication as shown in FIG.

FIG. 5 is a schematic flow chart showing a method of admission control of a remote terminal in D2D communication according to a second embodiment of the present invention.

As shown in FIG. 5, the method for controlling access of a remote terminal in D2D communication according to the second embodiment of the present invention is applicable to a base station, including:

Step 502: Receive a capability identifier sent by the relay terminal, where the capability identifier is used to indicate whether the relay terminal can perform resource scheduling and admission control on the remote terminal.

Step 504: Determine, according to the capability identifier and the usage of the communication resource of the base station, a device that performs resource scheduling and admission control on the remote terminal.

In the technical solution, the base station determines the capability identifier sent by the relay terminal, and determines the device for performing resource scheduling and admission control on the remote terminal according to the capability identifier of the relay terminal and the usage of the communication resource of the base station, and implements The resource scheduling and admission control of the remote terminal effectively solves the problem of admission control and resource scheduling when the remote terminal establishes a connection with the relay terminal. Ensure that the remote terminal and the relay terminal can perform D2D communication.

In the above technical solution, the step of determining the device for performing resource scheduling on the remote terminal specifically includes: determining, according to the capability identifier and the usage of the communication resource of the base station, that the relay terminal cannot When the remote terminal performs resource scheduling, the base station performs resource scheduling on the remote terminal;

Determining, by the relay terminal or the base station, the remote terminal, when the relay terminal is capable of performing resource scheduling on the remote terminal according to the capability identifier and the usage of the communication resource of the base station Perform resource scheduling.

In the technical solution, if the base station determines that the relay terminal can perform resource scheduling on the remote terminal according to the capability identifier of the relay terminal and the usage of the communication resource of the base station, the resource of the remote terminal can be implemented by the relay terminal. The scheduling may also be performed by the base station to implement resource scheduling for the remote terminal. If the base station determines that the relay terminal cannot perform resource scheduling on the remote terminal according to the capability identifier of the relay terminal and the usage of the communication resource of the base station, the base station can only perform the resource scheduling by the base station. Realize resource scheduling for remote terminals.

In any one of the foregoing technical solutions, the step of determining the device for performing the admission control on the remote terminal specifically includes:

When the relay terminal is unable to perform access control on the remote terminal according to the capability identifier and the usage of the communication resource of the base station, the base station performs access control on the remote terminal; as well as

Determining, by the relay terminal or the base station, the remote terminal when the relay terminal is capable of performing access control on the remote terminal according to the capability identifier and the usage of the communication resource of the base station The terminal performs access control.

In the technical solution, if the base station determines that the relay terminal can perform access control on the remote terminal according to the capability identifier of the relay terminal and the usage of the communication resource of the base station, the relay terminal can implement the remote terminal The access control may also implement the access control of the remote terminal by the base station; if the base station determines that the relay terminal cannot perform access control on the remote terminal according to the capability identifier of the relay terminal and the use of the communication resource of the base station, The access control to the remote terminal can only be implemented by the base station.

In any of the above technical solutions, preferably, determining that the remote terminal is connected to the remote end When the terminal performs access control, and the base station performs resource scheduling on the remote terminal, the admission control method further includes: determining admission according to the requirement of the communication service and the usage of the communication resource of the base station. Controlling criteria; transmitting the admission control criterion to the relay terminal, so that the relay terminal performs admission control on the remote terminal based on the admission control criterion.

In the technical solution, when the relay terminal performs the admission control on the remote terminal, and the base station performs resource scheduling on the remote terminal, the base station can make the relay terminal according to the admission control standard sent to the relay terminal. The control standard is used to determine whether the remote terminal is allowed to access, and the access control to the remote terminal is effectively implemented.

In any one of the foregoing technical solutions, preferably, when determining that the remote terminal performs resource scheduling and access control on the remote terminal, the admission control method further includes:

Transmitting, to the relay terminal, a condition for reclaiming the admission control function, so that the relay terminal sends a notification message to the base station when determining that it is necessary to stop the admission control of the remote terminal; When the notification message is described, the base station performs access control on the remote terminal.

Fig. 6 is a schematic block diagram showing an admission control apparatus of a remote terminal in D2D communication according to a second embodiment of the present invention.

As shown in FIG. 6, the access control device 600 for the remote terminal in the D2D communication according to the second embodiment of the present invention is applicable to the base station, and includes: a receiving unit 602 and a processing unit 604.

The receiving unit 602 is configured to receive a capability identifier sent by the relay terminal, where the capability identifier is used to indicate whether the relay terminal can perform resource scheduling and admission control on the remote terminal, and the processing unit 604 is configured to: And determining, by the capability identifier, a usage of the communication resource of the base station, a device that performs resource scheduling and admission control on the remote terminal.

In the technical solution, the base station determines the capability identifier sent by the relay terminal, and determines the device for performing resource scheduling and admission control on the remote terminal according to the capability identifier of the relay terminal and the usage of the communication resource of the base station, and implements Effective for resource scheduling and admission control of remote terminals The problem of admission control and resource scheduling when the remote terminal establishes a connection with the relay terminal is solved, and the remote terminal and the relay terminal can perform D2D communication.

In the above technical solution, preferably, the processing unit 604 determines that the operation of the device that performs resource scheduling on the remote terminal specifically includes: determining, according to the capability identifier and usage of the communication resource of the base station, When the relay terminal is unable to perform resource scheduling on the remote terminal, the base station performs resource scheduling on the remote terminal;

In any one of the foregoing technical solutions, preferably, the processing unit 604 determines that the operation of the device that performs the admission control on the remote terminal specifically includes: determining, according to the capability identifier, usage of the communication resource of the base station When it is determined that the relay terminal cannot perform access control on the remote terminal, the base station performs access control on the remote terminal;

In any of the above technical solutions, preferably, determining that the remote terminal is connected to the remote end When the terminal performs access control, and the base station performs resource scheduling on the remote terminal, the admission control apparatus 600 further includes: a determining unit 606, configured to: according to the requirement of the communication service and the communication resource of the base station a usage condition, determining an admission control criterion; a first sending unit 608, configured to send the admission control criterion to the relay terminal, so that the relay terminal is configured according to the admission control criterion The remote terminal performs admission control.

In any one of the foregoing technical solutions, the admission control apparatus 600 further includes: a second sending unit 610, when it is determined that the remote terminal performs resource scheduling and access control on the remote terminal, And a condition for transmitting the revocation admission control function to the relay terminal, so that the relay terminal sends a notification message to the base station when determining that it is necessary to stop the admission control of the remote terminal; The processing unit 604 is further configured to perform access control on the remote terminal by the base station when receiving the notification message.

Figure 7 shows a schematic block diagram of a base station in accordance with an embodiment of the present invention.

As shown in FIG. 7, a base station 700 according to an embodiment of the present invention includes: an admission control apparatus 600 of a remote terminal in D2D communication as shown in FIG. 6.

The technical solution of the present invention will be described in detail below with reference to FIGS. 8 to 10.

Since the current 3GPP protocol does not specify a mechanism for how a relay UE within an eNB coverage establishes a connection with a remote UE, the present invention proposes a respective operation mechanism of the UE and the eNB in the process of establishing an admission control mechanism. .

During the connection establishment process, the relay UE evaluates which resource configuration mode is suitable for the UE to better manage the access work of the remote UE during the connection establishment process. The eNB end determines the resource allocation mode by combining the evaluation of the relay UE and its own evaluation. For The UE-TO-NW system ultimately adopts the resource allocation mode, and the UE-TO-NW connection establishment process will be adjusted accordingly.

For UE-TO-NW relay communication, there are some relaying UEs that can calculate and execute complex algorithms, and have resource scheduling capabilities, and can directly allocate transmission resources for themselves and remote UEs. Considering the improvement of the processing capability of the relay UE to different extents, the present invention proposes the following relay connection admission control modes:

Manner 1: The relay UE performs the resource configuration mode evaluation function, and reports the evaluation result to the eNB; the eNB determines that the eNB scheduling resource mode is adopted according to the reported content and its own situation, and the connection establishment admission control function is directly executed by the eNB, and the eNB determines the result. Feedback to the relay UE.

Manner 2: The relay UE performs the resource configuration mode evaluation function, and reports the evaluation result to the eNB; the eNB determines that the eNB scheduling resource mode is adopted according to the reported content and its own situation, and the connection establishment admission control function is performed by the relay UE, and the eNB determines The result is fed back to the relay UE.

Manner 3: The relay UE performs the resource configuration mode evaluation function, and reports the evaluation result to the eNB; the eNB determines that the relay UE scheduling resource mode is adopted according to the reported content and its own situation, and the connection establishment admission control function is performed by the relay UE, and the eNB performs the eNB. The determination result is fed back to the relay UE, and the feedback information includes a condition for the eNB to reclaim the admission control function.

In mode 3, the relay UE monitors its own scheduling. When the resource scheduling usage reaches a certain condition (that is, the condition for reclaiming the admission control function), the eNB is reported to the eNB and the admission control function is reclaimed by the eNB. The admission control will be determined by the eNB.

The above three methods have their application occasions. When the channel conditions change or the current user demand changes, so that the current mode is not applicable, it can be considered to be converted into other connection establishment modes. Therefore, in the present invention, both the eNB and the UE end are considered. You can adjust the respective functions according to the current actual scene and convert the current connection establishment mode to other modes. The present invention provides an operation that the UE and the eNB need to perform during the connection establishment process, and solves the problem.

Admission control issues.

The following three ways are described in detail below:

The first method is shown in Figure 8:

After receiving the connection request of the remote UE, the relay UE supports the current state and capacity (remaining power, power consumption, maximum number of remote UEs that can be served, and whether there is self-scheduling resource capability. If yes, the current remaining power can be supported. The maximum number of remote UEs and the estimated maximum service time of the scheduling service are evaluated, and the evaluation result is reported to the eNB.

After receiving the report result of the relay UE, the eNB determines that the relay UE is not suitable for accessing too many remote UEs according to the resource usage of the current serving cell, and needs to strengthen control over the communication resources, and the communication resources are directly scheduled by the eNB. The admission control function will also be directly executed by the eNB. Then, the eNB feeds back the decision to the relay UE. At the same time, the eNB controls the admission of the remote UE according to the service traffic, the BSR (Buffer State Report), the rate requirement, and the like in real time.

In the technical solution of the first method, the eNB will directly schedule the UE-TO-NW communication resource because the communication resource usage in the current base station coverage is tight, and the eNB will not directly allow excessive remote UE access to alleviate or prevent communication resource shortage. And directly manage the access of the remote UE.

The second way is shown in Figure 9:

After receiving the report result of the relay UE, the eNB determines that the relay UE is not suitable for accessing too many remote UEs according to the resource usage of the current serving cell, and needs to strengthen control over the communication resources, and the communication resources are directly scheduled by the eNB. However, the admission control function will be directly performed by the relay UE; then, the eNB feeds back the decision to the relay UE.

At the same time, the eNB sends the latest signaling including the admission reference standard to the relay UE in a certain period according to other parameters such as resource usage (speed requirement, traffic requirement, etc.), so that the relay UE controls according to the reference standard. Admission to the far end UE.

In the technical solution of the second method, the eNB directly controls the scheduling of the UE-TO-NW communication resource because the communication resource usage in the current base station coverage is relatively tight, but in order to reduce the operation processing load of the base station and accelerate the connection establishment as much as possible, The admission control of the remote UE is handled by the relay UE.

Mode 3, as shown in Figure 10:

After receiving the connection request of the remote UE, the relay UE has its own state and capability (remaining power, power consumption, storage capacity, maximum number of remote UEs that can be served, whether there is self-scheduling resource capability, and if so, current remaining The number of the maximum number of remote UEs that can support the scheduling service and the estimated maximum service time are evaluated. The resource allocation mode is used to report the evaluation result to the eNB.

After receiving the reporting result of the relaying UE, the eNB, according to the resource usage of the current serving cell, has sufficient communication resources, and determines that the relaying UE can access the current remote UE, and allows the relaying UE to self-schedule resources and the admission control function. It is also directly executed by the relay UE; the eNB feeds back the decision to the relay UE, and the feedback result includes the condition that the eNB reclaims the admission control function. The conditions for reclaiming the admission control function include, but are not limited to, the degree of resource usage (the effective time limit for resources that can be handed over by the relay UE), and the maximum number of remote UEs that are allowed to serve.

The relay UE performs BSR reporting, CSI (Channel State Information) and its own state (remaining power, power consumption, storage capability, etc.) in the real-time according to the service traffic, and the priority of the remote UE requesting communication. , rate requirements, etc., control the admission of the remote UE.

The relay UE monitors the resource usage in real time during the subsequent communication process. When the reclaiming admission control function condition included in the feedback result is reached, the relay UE stops responding to the remote UE that is subsequently requested to access, and reports the eNB to the eNB and is reported by the eNB. The admission control function is reclaimed; the eNB performs admission control on the remote UE that is subsequently requested to access; when the communication resource is sufficient again, the admission control function can be decentralized to the relay UE.

In the technical solution of the third method, since the communication resources in the coverage of the current base station are sufficient, and the computing capability of the relay UE is strong, a sufficient number of remote UEs may be allowed in order to respond to the UE-TO-NW communication requirement more quickly and flexibly. The access, relay UE will directly schedule the UE-TO-NW communication resources and directly manage the access of the remote UE. In addition, when the relay communication resource usage exceeds the standard specified by the eNB, the relay UE may report the eNB to the eNB to reclaim the admission control right. This solution increases the flexibility of the UE-TO-NW communication and the connection establishment rate, reduces the operational processing load on the eNB side, and the eNB can strengthen resource management in a timely manner.

The technical solution of the present invention is described in detail above with reference to the accompanying drawings. The present invention provides a new access control scheme for a remote terminal in D2D communication, which effectively solves the problem of constructing a remote terminal and a relay terminal. The admission control problem and the resource scheduling problem at the time of the connection ensure that the remote terminal and the relay terminal can perform D2D communication.

The above description is only the preferred embodiment of the present invention, and is not intended to limit the present invention, and various modifications and changes can be made to the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and scope of the present invention are intended to be included within the scope of the present invention.

Claims

An admission control method for a remote terminal in a D2D communication, which is applicable to a relay terminal that is in a coverage of a base station, and includes:

Detecting the status and capability information of the relay terminal when receiving the connection request sent by the remote terminal;

Determining, according to the status and the capability information, whether the relay terminal can perform resource scheduling and admission control on the remote terminal, to obtain a capability identifier of the relay terminal;

And reporting the capability identifier to the base station, where the base station determines, according to the capability identifier and the usage of the communication resource of the base station, a device that performs resource scheduling and admission control on the remote terminal.
The method for controlling the admission of a remote terminal in D2D communication according to claim 1, further comprising:

Receiving resource scheduling and/or admission control to the remote terminal when receiving notification signaling by the relay terminal to perform resource scheduling and/or admission control on the remote terminal by the relay terminal .
The method for controlling the admission of a remote terminal in D2D communication according to claim 2, wherein if the remote terminal performs the admission control by the relay terminal by the relay terminal, And the admission control method further includes:

Receiving an admission control standard sent by the base station;

Determining whether to allow access by the remote terminal according to the admission control criterion, and if so, establishing direct communication with the remote terminal.
The method for controlling access of a remote terminal in D2D communication according to claim 2, wherein receiving resource scheduling and admission control of the remote terminal by the relay terminal is received by the base station The notification instruction, the admission control method further includes:

Receiving a condition for reclaiming the admission control function sent by the base station;

Detecting the usage of the communication resource of the base station in real time, determining whether to stop the remote terminal according to the usage of the communication resource and the condition for reclaiming the admission control function Admission control;

When it is determined that the admission control of the remote terminal needs to be stopped, a notification message is sent to the base station, so that the base station implements admission control to the remote terminal.
The admission control method for a remote terminal in D2D communication according to any one of claims 1 to 4, wherein the status and capability information comprises:

The remaining power information of the relay terminal, the power consumption, the maximum number of remote terminals currently available for service, and the estimated maximum service time, and the ability to schedule resources.
An admission control method for a remote terminal in D2D communication, which is applicable to a base station, and includes:

Receiving a capability identifier sent by the relay terminal, where the capability identifier is used to indicate whether the relay terminal can perform resource scheduling and admission control on the remote terminal;

And determining, according to the capability identifier and the usage of the communication resource of the base station, a device for performing resource scheduling and admission control on the remote terminal.
The method for determining the access control of the remote terminal in the D2D communication according to claim 6, wherein the step of determining the device for performing resource scheduling on the remote terminal comprises:

When the relay terminal is unable to perform resource scheduling on the remote terminal according to the capability identifier and the usage of the communication resource of the base station, the base station performs resource scheduling on the remote terminal;

Determining, by the relay terminal or the base station, the remote terminal, when the relay terminal is capable of performing resource scheduling on the remote terminal according to the capability identifier and the usage of the communication resource of the base station Perform resource scheduling.
The method for determining the access control of the remote terminal in the D2D communication according to claim 6, wherein the step of determining the device for performing the admission control on the remote terminal comprises:

When the relay terminal is unable to perform access control on the remote terminal according to the capability identifier and the usage of the communication resource of the base station, the base station performs access control on the remote terminal; as well as

Determining, by the relay terminal or the base station, the remote terminal when the relay terminal is capable of performing access control on the remote terminal according to the capability identifier and the usage of the communication resource of the base station The terminal performs access control.
The admission control method for a remote terminal in D2D communication according to any one of claims 6 to 8, wherein determining that the remote terminal performs access control on the remote terminal by the relay terminal When the base station performs resource scheduling on the remote terminal, the admission control method further includes:

Determining the admission control standard according to the requirements of the communication service and the usage of the communication resources of the base station;

And transmitting the admission control criterion to the relay terminal, so that the relay terminal performs admission control on the remote terminal based on the admission control criterion.
The method for controlling access of a remote terminal in D2D communication according to any one of claims 6 to 8, wherein determining, by the relay terminal, resource scheduling and access control of the remote terminal The admission control method further includes:

Transmitting, to the relay terminal, a condition for reclaiming the admission control function, so that the relay terminal sends a notification message to the base station when determining that it is necessary to stop the admission control of the remote terminal;

Upon receiving the notification message, the base station performs access control on the remote terminal.
An access control device for a remote terminal in a D2D communication, which is applicable to a relay terminal that is in a coverage of a base station, and includes:

a first detecting unit, configured to detect status and capability information of the relay terminal when receiving a connection request sent by the remote terminal;

a determining unit, configured to determine, according to the status and the capability information, whether the relay terminal can perform resource scheduling and admission control on the remote terminal, to obtain a capability identifier of the relay terminal;

a first sending unit, configured to report the capability identifier to the base station, where the base station determines to perform resource scheduling on the remote terminal according to the capability identifier and usage of the communication resource of the base station. Access control equipment.
The access control device for a remote terminal in D2D communication according to claim 11, further comprising:

a processing unit, configured to receive, by the base station, the remote end sent by the base station When the terminal performs the notification signaling of the resource scheduling and/or the admission control, the terminal performs resource scheduling and/or admission control on the remote terminal.
The admission control apparatus for the remote terminal in the D2D communication according to claim 12, wherein if the remote terminal performs the admission control by the relay terminal by the relay terminal, And the admission control device further includes:

a first receiving unit, configured to receive an admission control standard sent by the base station;

The processing unit is specifically configured to determine, according to the admission control criterion, whether to allow access by the remote terminal, and if yes, establish direct communication with the remote terminal.
The admission control apparatus for the remote terminal in the D2D communication according to claim 12, wherein if the relay terminal receives the resource scheduling and admission control of the remote terminal by the relay terminal The notification command, the admission control device further includes:

a second receiving unit, configured to receive a condition for reclaiming the admission control function sent by the base station;

a second detecting unit, configured to detect, in real time, usage of communication resources of the base station;

a determining unit, configured to determine, according to the usage condition of the communication resource and the condition for reclaiming the admission control function, whether to stop admission control on the remote terminal;

a second sending unit, configured to send a notification message to the base station to enable the base station to implement access to the remote terminal, when the determining unit determines that it is necessary to stop performing admission control on the remote terminal control.
An access control device for a remote terminal in D2D communication, which is applicable to a base station, and includes:

a receiving unit, configured to receive a capability identifier sent by the relay terminal, where the capability identifier is used to indicate whether the relay terminal can perform resource scheduling and admission control on the remote terminal;

And a processing unit, configured to determine, according to the capability identifier and the usage of the communication resource of the base station, a device that performs resource scheduling and admission control on the remote terminal.
The access control device for the remote terminal in the D2D communication according to claim 15, wherein the processing unit determines that the operation of the device for performing resource scheduling on the remote terminal comprises:

Determining the relay according to the capability identifier and the usage of the communication resources of the base station When the terminal cannot perform resource scheduling on the remote terminal, the base station performs resource scheduling on the remote terminal;

Determining, by the relay terminal or the base station, the remote terminal, when the relay terminal is capable of performing resource scheduling on the remote terminal according to the capability identifier and the usage of the communication resource of the base station Perform resource scheduling.
The access control device for the remote terminal in the D2D communication according to claim 15, wherein the processing unit determines that the operation of the device for performing the admission control on the remote terminal comprises:

When the relay terminal is unable to perform access control on the remote terminal according to the capability identifier and the usage of the communication resource of the base station, the base station performs access control on the remote terminal; as well as

Determining, by the relay terminal or the base station, the remote terminal when the relay terminal is capable of performing access control on the remote terminal according to the capability identifier and the usage of the communication resource of the base station The terminal performs access control.
The admission control apparatus for a remote terminal in D2D communication according to any one of claims 15 to 17, wherein determining that the remote terminal performs access control by the relay terminal When the base station performs resource scheduling on the remote terminal, the admission control apparatus further includes:

a determining unit, configured to determine an admission control standard according to a requirement of the communication service and a usage of the communication resource of the base station;

And a first sending unit, configured to send the admission control criterion to the relay terminal, so that the relay terminal performs admission control on the remote terminal according to the admission control criterion.
The admission control apparatus for a remote terminal in D2D communication according to any one of claims 15 to 17, wherein determining, by the relay terminal, resource scheduling and access control of the remote terminal The admission control device further includes:

a second sending unit, configured to send, to the relay terminal, a condition for reclaiming the admission control function, so that the relay terminal sends the base station to the base station when it is determined that it is necessary to stop the admission control of the remote terminal Notification message

The processing unit is further configured to: when the notification message is received, the base station The remote terminal performs access control.